Thread twister



- July 23, 1929; w, E, BRIERLEY 1,722,072

THREAD TWISTER Filed July 18. 1927 v INKENTOR.

I M N/[am Brier/e31 BY ay Mv A TTORNEYJ Patented July 23, 1929.

UNITE. I SAT WILLIAM E. BRIERLEY, 0F CLEVELAND, OHIO, ASSIGNOR TO GEORGE W. GEUDER, OF

CLEVELAND HEIGHTS, OHIO.

THREAD TWISTER.

Application filed July 18,

The present invention, relating as indicated to thread twisters, is particularly directed to a new and improved construction of extreme simplicity, strength and resistance to wear for use in the twisting of fibers of various types, such, for example, as artificial silk, cotton, wool and the like. The principal object of the invention is the provision of a thread twister whch will not be subject to breakage, which may be conveniently made and assembled, and which shall have a considerably longer life than twisters of various types which are now in general use, the life of which is ordinarily extremely short. A further object of the invention is to provide a twister which shall have great facility of'operation, that is, may be easily set up with threads in proper position to be twisted, and also have a very much reduced tendency to break the thread. I have secured this last object by providing within the twister a resiliency which may be proportioned to the breaking strength of the material being twisted, the resiliency serving as a safety element which prevents anysudden strain being thrown upon the thread.

To the accomplishment of the foregoing and related ends, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims; the annexed drawing and the following description setting forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical forms in which the principle of the invention may be used.

In said annexed drawings:

Fig. 1 is a side elevation showing my improved twister in use; Fig. 2 is a plan view of the same; Fig. 3 is a plan view of the parts which are assembled into the twister; Fig. 4 is a transverse central section in line 4-4, Fig. 2; Fig. 5 is a View in perspective of one of the retaining clips; Fig. 6 is a section on the line 66, Fig. 2; and Fig. 7 is a section on the line 7-7, Fig. 2.

In Fig. 1 I have shown a shaft 1, upon the upper end of which is mounted my improved twister 2, through the ends of which pass fibers 3 received from a bobbin 4 or other suitable storage means. The individual fibers pass through either of the opposite ends of the twisting means and and are then again stored on a suitable bobbin.

My improved twister consists of wires 10 which are first formed with a semi-circular 1927. Serial No. 206,470.

portion 11 adjacent one end, two of these wires being then assembled in opposed relation about a central cylindrical member 12, which is adapted to fit over the shaft or support 1, shown in Fig. 1. The inner extending to cnds 14 of the wires 10 are provided with opposed flattened surfaces 30, the outer one of which serves as a socket for the reception of a portion of the clamps presently to be described. After the two wires 10 have been assembled about the hub in the manner indicated in Fig. 2, U-shaped metal clips 13 are engaged over the inner ext-ending ends 14 of the wires 10 and the engaging portions 10 of the same wire on the same side of the hub 12, and are then bent over as shown in Fig. 6 to i completely enclose the portions 14 and 10 of the wires and clamp the same together, the clamps being forced into the sockets 80. One clamp is used on either side of the hub 12, and in this manner the two opposed wires 10 are secured together about the hub and are formed into the device shown in Fig. 2.

The U-shaped clamps 13 are formed of rolled stock, in which the direction of rolling, so and hence the grain of the metal, extends in the direction of the curvature given to the strip, thus utilizing the maximum strength of this material. These clips are first slipped over the wires as already described, the clip as engaging against the flattened surfaces 30 on the ends of the wires, and then being crimped or clapped over into the shape shown in Fig. 6.

The wire 10 is of the best material and is extremely resilient. The pieces are preliminarily formed of a suitable length and after they have been clamped together about the hub the outer ends are twisted into a spiral hook 15, from which the end 16 extends in- 5 wardly toward the hub a suflicient distance to prevent the thread from disengaging by slipping out between the coil 17 and this spiral hook, while permitting the thread to he slipped into the interior 18 of the hook by 10 being passed between the adjacent convolutions in a manner which will be readily understood.

It is essential that the arms of the twister be given a resiliency or yield which is proportioned to the strength of the material being twisted. If an extremely tough and strong material is to be used then a minimum of resiliency can be formed in the arms of'the twisting device, but with many materials which are weak and w iich cannot stand any sudden shock or strain it is necessary to have a considerable resiliency in the arms of the twister in order that these may yield and prevent the imposition on the the thread of any sudden jerk, which would cause the thread to break. In action there is fre- .quently a very considerable pull imposed upon the thread, and in many cases the arms of the twister are bent through a considerable angle from their normal position by this strain, and by the yielding of these arms not only is the strain on the thread lessened, but sudden shocks are absorbed in the device instead of being transmitted directly to the thread, causing breakage.

The particular advantages of the present device are the simplicity and the long life which is secured by reason of the resiliency in the arms and the resistance to wear in the hooks and consequent reduced tendency to break the thread. A further important advantage is the convenience with which the thread may be inserted Within the hooks and the security with which these are held by reason of the inwardly extending end 16 of the spiral formed at the end of each arm.

Other modes of applying the principle of my invention may be employed instead 01 the one explained, change being made as re gards the mechanism herein disclosed, provided the means stated by any of the follow ing claims or the equivalent of such stated means be employed.

I therefore particularly point out and disdirected extension from each of said hooks,

2. A. thread twister comprising a central member, two a-ms provided with portions fitting snugly about said central member,and means clamping together in the same plane said two arms and retaining the same on said member, said arms being provided with thread engaging hooks on their outer ends.

3. In a device of the character described, the combination of a central cylindrical'hub, two resilient arms, each provided with a thread-receiving hook on one end, and said arms having curved portions engaging about said hub on opposite sides, and means clamp-- ing said arms together in engagement with said-hi1. V

a. In a device of the character described, the combination of a central cylindrical hub, two resilient arms, each provided with a thread-receiving hook on one end, said arms having curved portions intermediate their ends engaging about and on opposite sides of said hub, and said arms then lying in contact and parallelism with each other on opposite sides of said hub, and clamping means engaging said contacting portions oat said arms.

Signed by me, this 11th day of July, 1927.

WILLIAM E. BRIERLEY. 

